Jump Training in Rugby Union Players: Barbell or Hexagonal Bar?

Journal article


Weakley, Jonathon, Till, Kevin, Read, Dale B., Leduc, Cédric, Roe, Gregory A. B., Phibbs, Padraic J., Darrall-Jones, Joshua David and Jones, Ben. (2021). Jump Training in Rugby Union Players: Barbell or Hexagonal Bar? Journal of Strength and Conditioning Research. 35(3), pp. 754-761. https://doi.org/10.1519/JSC.0000000000002742
AuthorsWeakley, Jonathon, Till, Kevin, Read, Dale B., Leduc, Cédric, Roe, Gregory A. B., Phibbs, Padraic J., Darrall-Jones, Joshua David and Jones, Ben
Abstract

Weakley, JJS, Till, K, Read, DB, Leduc, C, Roe, GAB, Phibbs, PJ, Darrall-Jones, J, and Jones, B. Jump training in rugby union players: barbell or hexagonal bar?. J Strength Cond Res 35(3): 754–761, 2021—The countermovement jump (CMJ) is an exercise that can develop athletic performance. Using the conventional barbell (BAR) and hexagonal barbell (HEX) while jumping, the intensity can be increased. However, the bar that provides greater adaptations is unknown. Therefore, this study aimed to assess changes in loaded and unloaded CMJ with either a BAR or HEX across a 4-week mesocycle in rugby union players. Twenty-nine subjects were strength-matched and randomized into 2 groups. Subjects completed 3 sets of CMJ at 20% of 1 repetition maximum back squat, 3 times per week for 4 weeks, using either a BAR or HEX. Subjects completed an unloaded CMJ on a force plate before and after, whereas the highest peak concentric velocity during the jump squat was recorded in the first and last training sessions using a linear position transducer. Magnitude-based inferences assessed meaningful changes within- and between-groups. Possibly greater improvements in unloaded CMJ were found in the HEX group in jump height (effect size ± 90% confidence intervals: 0.27 ± 0.27), relative peak (0.21 ± 0.23), and mean power (0.32 ± 0.36). In addition, likely to very likely greater improvements were observed in the HEX group in peak velocity (0.33 ± 0.27), relative mean power (0.53 ± 0.30), mean force (0.47 ± 0.27), and 100-ms impulse (0.60 ± 0.48). Similar raw changes in jump squat peak velocity occurred (0.20–0.25 m·s−1), despite the likely greater ES occurring with the BAR (0.32 ± 0.26). These results indicate that training with the HEX leads to superior unloaded CMJ adaptations. In addition, practitioners should use either the HEX or BAR when aiming to enhance loaded jump ability.

Keywordsforce; power; velocity; impulse; jump squat; hexagonal barbell
Year01 Jan 2021
JournalJournal of Strength and Conditioning Research
Journal citation35 (3), pp. 754-761
PublisherNLM (Medline)
ISSN1533-4287
Digital Object Identifier (DOI)https://doi.org/10.1519/JSC.0000000000002742
PubMed ID29985223
Scopus EID2-s2.0-85101442721
Research or scholarlyResearch
Page range754-761
Publisher's version
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All rights reserved
File Access Level
Controlled
Output statusPublished
Publication dates
OnlineMar 2021
Publication process dates
Deposited11 Nov 2021
Place of publicationUnited States
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